One person who participated in this event was Tillius Cimber, who used the 
One person who participated in this event was Tillius Cimber, who used the pretext of begging for his brother's return from exile to hold onto some clothing and prevent the target from raising his arms. The chief instigators of this event were all killed at the Battle of Philippi two years later. It followed several ill omens in bird entrails and a plea from Calpurnia not to leave the house, and it left its target's body under the status of Pompey. For 10 points, identify this event which took place on March 15, 44 BCE, and was orchestrated by Cassius and Brutus against a Roman dictator.
One person who participated in this event was Tillius Cimber, who used the pretext of begging for his brother's return from exile to hold onto some clothing and prevent the target from raising his arms.
the {assasination} of Gaius Julius {Caesar} [or obvious equivalents]